ASTM A312 TP347 Pipe

1. Standard: ASTM A312, ASME SA312
2. Size: 1/2''~48''
3. Thickness: SCH5~SCHXXS
4. Service: Cutting, Welding, Fabricated, Customized

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Product Introduction

ASTM A312 TP347 pipe is a specific type of stainless steel pipe that conforms to the ASTM A312 standard and is made from Grade TP347 stainless steel alloy. This alloy is stabilized with columbium (niobium), which enhances its resistance to sensitization and intergranular corrosion, particularly in high-temperature applications.

ASTM A312 UNS S34700 Pipe Applications:

Chemical Processing
Petroleum Refining
Power Generation
Food Processing
Heat Exchangers
Pulp and Paper

ASTM A312 TP347 Specification Chart

standard	ASTM A312 / ASTM SA312
ANSI Standard	ANSI/ASME B36.19M, ANSI/ASME B36.10M
Shapes and Types	Hydraulic, Rectangle, Honed, Square, Hex, Round
Shapes and Types	ERW, Fabricated, 100% X Ray Welded, CDW, Seamless, Welded
Pipe End Finishing	Bevel one end, Bevel large end, Plain One End, Bevel small end, Treaded Both Ends, Beveled end, Plain Both Ends, Bevel both ends, Treaded On End, Beveled One End
Delivery Conditions	Annealed and Pickled, Bright Annealed, Polished, Hot Rolled, Cold Drawn
Surface Condition	2B, No.4, No.1, No.8 Mirror Finish or custom Finish as per customer Requirements
Pipe Wall Thickness Chart	SCH 5, SCH10, SCH 40, SCH 80, SCH 80S, SCH 160, SCH XXS, SCH XS

Chemical Composition Of 1.4550 Stainless steel Pipe

Element	Alloy 347
Carbon*	0.08
Manganese	2.00
Phosphorus	0.045
Sulfur	0.03
Silicon	0.75
Chromium	17.00-19.00
Nickel	9.00-13.00
Columbium +Tantalum**	10xC min to 1.00 max
Tantalum	-
Titanium**	-
Cobalt	-
Nitrogen	-
Iron	Balance

Mechanical Properties Of ASTM A312 TP347 Stainless Steel Pipe

Elongation at break ( % )	<60
Hardness - Brinell	160-190
Izod impact strength ( J.m-1 )	20-136
Modulus of elasticity ( GPa )	190-210
Tensile strength ( MPa )	520-1100